Demopolis, AL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Demopolis, a city in Marengo County, Alabama.
This Afternoon
99°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 99. North wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Demopolis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Chance Showers And Thunderstorms | 0 mph | 33% |
| Tonight | 71°F | Chance Showers And Thunderstorms | 0 mph | 33% |
| Sunday | 97°F | Chance Showers And Thunderstorms | 0 to 5 mph NE | 43% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms | 0 mph | 45% |
| Monday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 20% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 mph | 27% |
| Tuesday | 95°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 mph | 17% |
| Tuesday Night | 70°F | Slight Chance Showers And Thunderstorms | 0 mph | 17% |
| Wednesday | 92°F | Sunny | 0 to 5 mph NE | 7% |
| Wednesday Night | 68°F | Mostly Clear | 0 to 5 mph NE | 7% |
| Thursday | 89°F | Sunny | 5 to 10 mph N | 6% |
| Thursday Night | 65°F | Mostly Clear | 0 to 5 mph N | 6% |
| Friday | 88°F | Sunny | 5 to 10 mph N | 1% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Demopolis (32.500, -87.827). Updated through the day.
Growing snapshot for Demopolis
Last spring frost
Mar 16
First fall frost
Nov 14
Growing season
241 days
Hardiness zone
8b
More local growing data for Demopolis: nearby ZIP 36742 weather · frost dates · planting calendar · Alabama frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Demopolis L&D, Al (8.6 mi from Demopolis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.